Book-stack.



W. T. GA LLAGHAN.

BOOK STACK.

APPLICATION FILED DEO.23, 1907.

989,566. I PatentedApr.18,1911.

3 SHEETS-SHEET 1.

I I i I mlllmmmlllllu W. T. CALLAGHAN;

BOOK STACK. APPLICATION FILED DEO.23,1907.

Patented Apr. 18, 1911.

3 SHEETSSHBET 2.

W. T. GALLAGHAN.

BOOK STACK.

APPLICATION FILED DEG.23,1907.

Patented Apr. 18, 1911.

3 SHEETS-SHEET 3.

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Zu E;magnum-E n uunmm mu mmmmagu J E g WILLIAM T. CALLAGHAN, OF CHICAGO,ILLINOIS.

' BOOK-STACK.

Specification of Letters Patent. Patented Apr. 1.8, 191 1 Applicationfiled December 23, 1907. Serial No. 407,848.

To all whom it may concern: Be it known that I, WILLIAM T. GALLA- GHAN,a citizen of the United States, residing at the city of Chicago, in thecounty of Cook and State of Illinois, have invented a new and usefulImprovement in Book- Stacks, tion.

' This invention relates to certain improvements in book stacks; andparticularly to those such as are commonly employed in public and otherlibraries.

The object of the invention is to provide a solid and substantialstructure which shall of which the following is a specificabe simple andcheap in construction and for ready reference thereto.

The invention consists in certain novel features of the construction,combination and arrangement of the several parts of the stack, and itscomponent parts, whereby important advantages are had in theconstruction, and the whole is better adapted and 'more convenient inuse.

The principles of the invention are illus trated in the drawings, inwhich Figure 1 is a perspective of a double faced stack; Fig. 2.is anenlarged representation of a portion of the base and uprights; Fig. 3 isan enlarged perspective view of a shelf with label holder and booksupport in place; Fig. 4 is an enlarged portion of the front edge ofsuch shelf; Fig. 5 shows a book support removed from the shelf; Fig. 6is a shelf supporting cleat; Figs. 7, 8 and 9 illustrate the'applicationof my invention to a library stack adapted to support floors o platformsat cpnvenient heights.

Further describing my invention with reference to the drawings, in whichlike characters of reference denote like parts throughout; 1 is the baseof a double book stack; 22 arefthe ends thereof.

3 is a T-bar resting on the floor on which the stack stands and havingits base 4. in

contact with and secured to the stack end 2.

5 and 6 are similar T-bars having their bases in contact with eachother, and over which are folded the sheet metal facings 7. Such shelffacings are also provided at the inner ends of the stack and folded overthe T-bar 3. The construction of the said facings or linings at theinner ends of the stack and intermediate thereof is practically thesame. They are formed of sheets of metal having the perforations 9 andhaving the vertical edges turned down at 7 so as to off-set theprincipal plane thereof from the inner end of the stack by the thicknessof the base of the T-bars described. Said linings are provided with acentral off-set 10, which passes around and makes a finish for thevertical leg of the T-bars and may provide a stop against which the rearedges of the shelves may impinge and thereby be placed in alinement.Such a-linement may,

however, be secured by the relative construction of the shelf andcleathereafter described. Said linings'consist-of twopar-ts of sheet metal,one of which 10 as shown in Figs. 2 and 9 is provided with overturnedend portions, which are adapted to embrace the opposite outer ends ofthe bar web, while intermediate portions of said lining flatly contactthe bar web and bases while the other part 11' thereof contacts theopposite base members but lies in spaced relation to the web portionsand overlaps the other lining part and thereby also embraces theopposite ends of the bar web.

The shelf support or cleat shown in Fig. 6 comprises a horizontal flange12 and a vertical flange 13, having the lugs 14 separated from suchvertical flange and off-set enough that they may be inserted in theopenings 9 of the stack facings. When so inserted the vertical flanges13 will bear smoothlyagainst the face of the linings and the lugs 14will be inclosed or housed in the space back thereof. The shelf cleatswhen properly placed should not come quite to the off-set portion 10,but a slight lnterval should be provided for the purpose later to be setforth. The lugs 14 should correspond in width to the length of theopenings 9.

A shelf especially adapted to be used in connection with the structureslast described is shown in Fig. 3. It should bemade of a single piece ofsheet metal comprising the flat or table portion 15, the front verticalflange 16, and the bottom horizontal flange 17. It is also provided withthe rear vertical flange 18, the top horizontal flange 19, and thedownwardly turned lugs 20. It will be seen that the shelf thus shown canbe made of a single piece of steel without cutting, except to remove aslight portion of metalif desired from a point corresponding totheextension of the horizontal flange 19, and to separate the inner edge ofthe lug 2 20 from the end of the vertical flange 18 so as to enable itto be turned in an opposite direction. The shelf thus described and theshelf cleat shown in Fig. 6 should be so constructed with reference toeach other that the length of such cleat should be slightly less thanthe distance between the lug 20 and the edge of the front horizontalflange 17. When the shelf is slid backward on the cleats the rear edgewill strike against the stops 10, whereupon the lugs 20 will drop intothe rear of the ends of such cleat and hold it securely in position.

A book support designed to be used in connection with the describedshelf is shown in Fig. 5., It should be made of a single piece of metalso bent as to form a body portion which may consist of a lowerhorizontal member 21 having at one end the downwardly projecting lug 22,the upright 23, and a portion which may comprise the parts 24 and'25 toconnect the vertical to the horizontal portion. When so connected theprojecting material should be secured to the horizontal arm by a rivet26 and the end formed into a reverse bend or loop 27. The support thusformed. being made of material of suitable Width may he slipped onto therear of the shelf when in place in the space between the ends of therear vertical and horizontal flanges and the end of the case. When soput in position it is not removable at any intermediate osition, butforms a substantial and readi y slidable book support which will bindand give a substantial support for books on the shelf at whatever pointit may be placed. The leverage of the projecting portions causes the lug22 and the loop 27 to so engage the flanges on which it is mounted astoproduce this result.

The stiffening flanges 16 and 17 on the front edge of the shelf 15provide a means for attaching a label holder of the form shown in Fig.4. The latter may be formed of a single piece of metal, comprising thevertical portion 30, having the off-set outstanding lugs 31, thedownturned finish or bead 32 off-set from its face, the horizontalflange 33, and the reversely turned flange 34.

The latter should be spaced with reference ,to the flange 17 so asto'correspond to the thickness of the material of which the shelfportion or portions of the shelf desired, 1

where they will be held in secure engagement. The oif-set lugs 31 andthe bead 32 form a simple and convenient means by which a label holdermay be respectively supported and protected. v

I claim and desire to secure by Letters Patent the following: I

In combination with the base of a book stack, a'vertical membercomprising a plurality of T-bars, said bars being placed base to baseand extending through said base, the bases of said bars being disposedtransversely of the stack, a two-part covering for said T-bars adaptedto embrace the same, one part of said covering flatly con: tacting theopposite exterior faces of the contacting bases and the contiguousalining faces ofthe oppositely extending webs of said bars and lappedaround the outer edges of said webs, the other part of said coveringcontacting the bar bases but spaced' from the webs thereof andoverlapping the lapped portions of the first mentioned part of saidcovering, said covering having parallel faces, one of said parallelfaces being provided with openings therethrough and the other acting asa stop for the end of the shelf passing through said openings, and avertical fold in said covering adapted as a limiting means for the rearedges of the shelving of the stack.

In witness whereof, I have hereunto set my hand, this 19th day ofDecember A. D. 1907, in the presence of two subscribing witnesses.

C. K. CHAMBERLAIN, A. S. PHILLIPS.

